What Happens When You Put Evolution on Replay?

If you could rewind time and let evolution happen all over again, would the end result resemble life as we know it? This is no longer a theoretical question. While he was at Georgia Tech, School of Biological Sciences'Eric Gaucher worked with Betul Kacar on a NASA-funded project to replay evolution again and again with the bacterium E. coli, rewinding the evolution of a specific key protein that the bacteria needed to survive.